This 6" diameter vinyl static cling attaches to glass from either side. The vinyl is clear, with white "cracks" and the colored text and ribbon. Use a few drops of water and smooth it onto glass. Easy on, easy off.

Also works on glass in your entryway, a whiteboard at work, or other smooth surface. On your car, best to mount on the inside so it doesn't get knocked off by a car wash or heavy weather.